S.C. Code Ann. § 38-71-160: When policy sold on direct response basis considered to be returned.

For purposes of SECTION 38-71-150, the insured is considered to have returned a policy sold on a direct response basis as of the date shown on the postmark or the date the insured notifies the insurer or an agent of the insurer, in writing or in person, that the insured does not want the policy, whichever is the earlier.